Probably the best place in Istanbul with European and Japanese cuisine, good service even by the standards of Novikov's Moscow establishments. Prices are also at the level of the best establishments in the capital, dinner with wine in the region of 300-400 Euros for 2. I really liked the hookah, it can be ordered in a separate banquet hall for 6-10 people. The cost of a hookah is 60 Euros.
The entrance to the establishment is through the main entrance of the Mandarin Oriental Hotel. If you do not stay at the hotel, then you need to keep in mind that there are time intervals in the hotel (around 16-17h) when the restaurant is closed and dinner is served for the guests. You can reserve a table, but it's for dinner. If you are not hungry and planned to stop by at this time for a cocktail, a light snack or to drink tea with desserts, you will not be imprisoned. The staff is very qualified and friendly. Prices, when compared with Moscow, are definitely higher. But it's delicious.